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Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +01001/*
2 * Copyright (C) 2005-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18#include <common.h>
19
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +010020/*
21 * The u-boot networking stack is a little weird. It seems like the
22 * networking core allocates receive buffers up front without any
23 * regard to the hardware that's supposed to actually receive those
24 * packets.
25 *
26 * The MACB receives packets into 128-byte receive buffers, so the
27 * buffers allocated by the core isn't very practical to use. We'll
28 * allocate our own, but we need one such buffer in case a packet
29 * wraps around the DMA ring so that we have to copy it.
30 *
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020031 * Therefore, define CONFIG_SYS_RX_ETH_BUFFER to 1 in the board-specific
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +010032 * configuration header. This way, the core allocates one RX buffer
33 * and one TX buffer, each of which can hold a ethernet packet of
34 * maximum size.
35 *
36 * For some reason, the networking core unconditionally specifies a
37 * 32-byte packet "alignment" (which really should be called
38 * "padding"). MACB shouldn't need that, but we'll refrain from any
39 * core modifications here...
40 */
41
42#include <net.h>
Ben Warren89973f82008-08-31 22:22:04 -070043#include <netdev.h>
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +010044#include <malloc.h>
Semih Hazar0f751d62009-12-17 15:07:15 +020045#include <miiphy.h>
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +010046
47#include <linux/mii.h>
48#include <asm/io.h>
49#include <asm/dma-mapping.h>
50#include <asm/arch/clk.h>
51
52#include "macb.h"
53
Haavard Skinnemoen04fcb5d2007-05-02 13:22:38 +020054#define barrier() asm volatile("" ::: "memory")
55
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020056#define CONFIG_SYS_MACB_RX_BUFFER_SIZE 4096
57#define CONFIG_SYS_MACB_RX_RING_SIZE (CONFIG_SYS_MACB_RX_BUFFER_SIZE / 128)
58#define CONFIG_SYS_MACB_TX_RING_SIZE 16
59#define CONFIG_SYS_MACB_TX_TIMEOUT 1000
60#define CONFIG_SYS_MACB_AUTONEG_TIMEOUT 5000000
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +010061
62struct macb_dma_desc {
63 u32 addr;
64 u32 ctrl;
65};
66
67#define RXADDR_USED 0x00000001
68#define RXADDR_WRAP 0x00000002
69
70#define RXBUF_FRMLEN_MASK 0x00000fff
71#define RXBUF_FRAME_START 0x00004000
72#define RXBUF_FRAME_END 0x00008000
73#define RXBUF_TYPEID_MATCH 0x00400000
74#define RXBUF_ADDR4_MATCH 0x00800000
75#define RXBUF_ADDR3_MATCH 0x01000000
76#define RXBUF_ADDR2_MATCH 0x02000000
77#define RXBUF_ADDR1_MATCH 0x04000000
78#define RXBUF_BROADCAST 0x80000000
79
80#define TXBUF_FRMLEN_MASK 0x000007ff
81#define TXBUF_FRAME_END 0x00008000
82#define TXBUF_NOCRC 0x00010000
83#define TXBUF_EXHAUSTED 0x08000000
84#define TXBUF_UNDERRUN 0x10000000
85#define TXBUF_MAXRETRY 0x20000000
86#define TXBUF_WRAP 0x40000000
87#define TXBUF_USED 0x80000000
88
89struct macb_device {
90 void *regs;
91
92 unsigned int rx_tail;
93 unsigned int tx_head;
94 unsigned int tx_tail;
95
96 void *rx_buffer;
97 void *tx_buffer;
98 struct macb_dma_desc *rx_ring;
99 struct macb_dma_desc *tx_ring;
100
101 unsigned long rx_buffer_dma;
102 unsigned long rx_ring_dma;
103 unsigned long tx_ring_dma;
104
105 const struct device *dev;
106 struct eth_device netdev;
107 unsigned short phy_addr;
108};
109#define to_macb(_nd) container_of(_nd, struct macb_device, netdev)
110
111static void macb_mdio_write(struct macb_device *macb, u8 reg, u16 value)
112{
113 unsigned long netctl;
114 unsigned long netstat;
115 unsigned long frame;
116
117 netctl = macb_readl(macb, NCR);
118 netctl |= MACB_BIT(MPE);
119 macb_writel(macb, NCR, netctl);
120
121 frame = (MACB_BF(SOF, 1)
122 | MACB_BF(RW, 1)
123 | MACB_BF(PHYA, macb->phy_addr)
124 | MACB_BF(REGA, reg)
125 | MACB_BF(CODE, 2)
126 | MACB_BF(DATA, value));
127 macb_writel(macb, MAN, frame);
128
129 do {
130 netstat = macb_readl(macb, NSR);
131 } while (!(netstat & MACB_BIT(IDLE)));
132
133 netctl = macb_readl(macb, NCR);
134 netctl &= ~MACB_BIT(MPE);
135 macb_writel(macb, NCR, netctl);
136}
137
138static u16 macb_mdio_read(struct macb_device *macb, u8 reg)
139{
140 unsigned long netctl;
141 unsigned long netstat;
142 unsigned long frame;
143
144 netctl = macb_readl(macb, NCR);
145 netctl |= MACB_BIT(MPE);
146 macb_writel(macb, NCR, netctl);
147
148 frame = (MACB_BF(SOF, 1)
149 | MACB_BF(RW, 2)
150 | MACB_BF(PHYA, macb->phy_addr)
151 | MACB_BF(REGA, reg)
152 | MACB_BF(CODE, 2));
153 macb_writel(macb, MAN, frame);
154
155 do {
156 netstat = macb_readl(macb, NSR);
157 } while (!(netstat & MACB_BIT(IDLE)));
158
159 frame = macb_readl(macb, MAN);
160
161 netctl = macb_readl(macb, NCR);
162 netctl &= ~MACB_BIT(MPE);
163 macb_writel(macb, NCR, netctl);
164
165 return MACB_BFEXT(DATA, frame);
166}
167
Semih Hazar0f751d62009-12-17 15:07:15 +0200168#if defined(CONFIG_CMD_MII)
169
Mike Frysinger5700bb62010-07-27 18:35:08 -0400170int macb_miiphy_read(const char *devname, u8 phy_adr, u8 reg, u16 *value)
Semih Hazar0f751d62009-12-17 15:07:15 +0200171{
172 struct eth_device *dev = eth_get_dev_by_name(devname);
173 struct macb_device *macb = to_macb(dev);
174
175 if ( macb->phy_addr != phy_adr )
176 return -1;
177
178 *value = macb_mdio_read(macb, reg);
179
180 return 0;
181}
182
Mike Frysinger5700bb62010-07-27 18:35:08 -0400183int macb_miiphy_write(const char *devname, u8 phy_adr, u8 reg, u16 value)
Semih Hazar0f751d62009-12-17 15:07:15 +0200184{
185 struct eth_device *dev = eth_get_dev_by_name(devname);
186 struct macb_device *macb = to_macb(dev);
187
188 if ( macb->phy_addr != phy_adr )
189 return -1;
190
191 macb_mdio_write(macb, reg, value);
192
193 return 0;
194}
195#endif
196
197
Jon Loeliger07d38a12007-07-09 17:30:01 -0500198#if defined(CONFIG_CMD_NET)
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100199
Joe Hershberger9d9a89b2012-05-21 14:45:31 +0000200static int macb_send(struct eth_device *netdev, void *packet, int length)
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100201{
202 struct macb_device *macb = to_macb(netdev);
203 unsigned long paddr, ctrl;
204 unsigned int tx_head = macb->tx_head;
205 int i;
206
207 paddr = dma_map_single(packet, length, DMA_TO_DEVICE);
208
209 ctrl = length & TXBUF_FRMLEN_MASK;
210 ctrl |= TXBUF_FRAME_END;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200211 if (tx_head == (CONFIG_SYS_MACB_TX_RING_SIZE - 1)) {
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100212 ctrl |= TXBUF_WRAP;
213 macb->tx_head = 0;
214 } else
215 macb->tx_head++;
216
217 macb->tx_ring[tx_head].ctrl = ctrl;
218 macb->tx_ring[tx_head].addr = paddr;
Haavard Skinnemoen04fcb5d2007-05-02 13:22:38 +0200219 barrier();
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100220 macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART));
221
222 /*
223 * I guess this is necessary because the networking core may
224 * re-use the transmit buffer as soon as we return...
225 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200226 for (i = 0; i <= CONFIG_SYS_MACB_TX_TIMEOUT; i++) {
Haavard Skinnemoen04fcb5d2007-05-02 13:22:38 +0200227 barrier();
228 ctrl = macb->tx_ring[tx_head].ctrl;
229 if (ctrl & TXBUF_USED)
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100230 break;
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100231 udelay(1);
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100232 }
233
234 dma_unmap_single(packet, length, paddr);
235
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200236 if (i <= CONFIG_SYS_MACB_TX_TIMEOUT) {
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100237 if (ctrl & TXBUF_UNDERRUN)
238 printf("%s: TX underrun\n", netdev->name);
239 if (ctrl & TXBUF_EXHAUSTED)
240 printf("%s: TX buffers exhausted in mid frame\n",
241 netdev->name);
Haavard Skinnemoen04fcb5d2007-05-02 13:22:38 +0200242 } else {
243 printf("%s: TX timeout\n", netdev->name);
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100244 }
245
246 /* No one cares anyway */
247 return 0;
248}
249
250static void reclaim_rx_buffers(struct macb_device *macb,
251 unsigned int new_tail)
252{
253 unsigned int i;
254
255 i = macb->rx_tail;
256 while (i > new_tail) {
257 macb->rx_ring[i].addr &= ~RXADDR_USED;
258 i++;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200259 if (i > CONFIG_SYS_MACB_RX_RING_SIZE)
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100260 i = 0;
261 }
262
263 while (i < new_tail) {
264 macb->rx_ring[i].addr &= ~RXADDR_USED;
265 i++;
266 }
267
Haavard Skinnemoen04fcb5d2007-05-02 13:22:38 +0200268 barrier();
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100269 macb->rx_tail = new_tail;
270}
271
272static int macb_recv(struct eth_device *netdev)
273{
274 struct macb_device *macb = to_macb(netdev);
275 unsigned int rx_tail = macb->rx_tail;
276 void *buffer;
277 int length;
278 int wrapped = 0;
279 u32 status;
280
281 for (;;) {
282 if (!(macb->rx_ring[rx_tail].addr & RXADDR_USED))
283 return -1;
284
285 status = macb->rx_ring[rx_tail].ctrl;
286 if (status & RXBUF_FRAME_START) {
287 if (rx_tail != macb->rx_tail)
288 reclaim_rx_buffers(macb, rx_tail);
289 wrapped = 0;
290 }
291
292 if (status & RXBUF_FRAME_END) {
293 buffer = macb->rx_buffer + 128 * macb->rx_tail;
294 length = status & RXBUF_FRMLEN_MASK;
295 if (wrapped) {
296 unsigned int headlen, taillen;
297
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200298 headlen = 128 * (CONFIG_SYS_MACB_RX_RING_SIZE
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100299 - macb->rx_tail);
300 taillen = length - headlen;
301 memcpy((void *)NetRxPackets[0],
302 buffer, headlen);
303 memcpy((void *)NetRxPackets[0] + headlen,
304 macb->rx_buffer, taillen);
305 buffer = (void *)NetRxPackets[0];
306 }
307
308 NetReceive(buffer, length);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200309 if (++rx_tail >= CONFIG_SYS_MACB_RX_RING_SIZE)
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100310 rx_tail = 0;
311 reclaim_rx_buffers(macb, rx_tail);
312 } else {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200313 if (++rx_tail >= CONFIG_SYS_MACB_RX_RING_SIZE) {
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100314 wrapped = 1;
315 rx_tail = 0;
316 }
317 }
Haavard Skinnemoen04fcb5d2007-05-02 13:22:38 +0200318 barrier();
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100319 }
320
321 return 0;
322}
323
Haavard Skinnemoenf2134f82007-05-02 13:31:53 +0200324static void macb_phy_reset(struct macb_device *macb)
325{
326 struct eth_device *netdev = &macb->netdev;
327 int i;
328 u16 status, adv;
329
330 adv = ADVERTISE_CSMA | ADVERTISE_ALL;
331 macb_mdio_write(macb, MII_ADVERTISE, adv);
332 printf("%s: Starting autonegotiation...\n", netdev->name);
333 macb_mdio_write(macb, MII_BMCR, (BMCR_ANENABLE
334 | BMCR_ANRESTART));
335
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200336 for (i = 0; i < CONFIG_SYS_MACB_AUTONEG_TIMEOUT / 100; i++) {
Haavard Skinnemoenf2134f82007-05-02 13:31:53 +0200337 status = macb_mdio_read(macb, MII_BMSR);
338 if (status & BMSR_ANEGCOMPLETE)
339 break;
340 udelay(100);
341 }
342
343 if (status & BMSR_ANEGCOMPLETE)
344 printf("%s: Autonegotiation complete\n", netdev->name);
345 else
346 printf("%s: Autonegotiation timed out (status=0x%04x)\n",
347 netdev->name, status);
348}
349
Gunnar Rangoyfc01ea12009-01-23 12:56:31 +0100350#ifdef CONFIG_MACB_SEARCH_PHY
351static int macb_phy_find(struct macb_device *macb)
352{
353 int i;
354 u16 phy_id;
355
356 /* Search for PHY... */
357 for (i = 0; i < 32; i++) {
358 macb->phy_addr = i;
359 phy_id = macb_mdio_read(macb, MII_PHYSID1);
360 if (phy_id != 0xffff) {
361 printf("%s: PHY present at %d\n", macb->netdev.name, i);
362 return 1;
363 }
364 }
365
366 /* PHY isn't up to snuff */
Andreas Bießmann6ed0e942012-08-16 01:50:04 +0000367 printf("%s: PHY not found\n", macb->netdev.name);
Gunnar Rangoyfc01ea12009-01-23 12:56:31 +0100368
369 return 0;
370}
371#endif /* CONFIG_MACB_SEARCH_PHY */
372
373
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100374static int macb_phy_init(struct macb_device *macb)
375{
376 struct eth_device *netdev = &macb->netdev;
377 u32 ncfgr;
378 u16 phy_id, status, adv, lpa;
379 int media, speed, duplex;
380 int i;
381
Gunnar Rangoyfc01ea12009-01-23 12:56:31 +0100382#ifdef CONFIG_MACB_SEARCH_PHY
383 /* Auto-detect phy_addr */
384 if (!macb_phy_find(macb)) {
385 return 0;
386 }
387#endif /* CONFIG_MACB_SEARCH_PHY */
388
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100389 /* Check if the PHY is up to snuff... */
390 phy_id = macb_mdio_read(macb, MII_PHYSID1);
391 if (phy_id == 0xffff) {
392 printf("%s: No PHY present\n", netdev->name);
393 return 0;
394 }
395
Haavard Skinnemoenf2134f82007-05-02 13:31:53 +0200396 status = macb_mdio_read(macb, MII_BMSR);
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100397 if (!(status & BMSR_LSTATUS)) {
Haavard Skinnemoenf2134f82007-05-02 13:31:53 +0200398 /* Try to re-negotiate if we don't have link already. */
399 macb_phy_reset(macb);
400
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200401 for (i = 0; i < CONFIG_SYS_MACB_AUTONEG_TIMEOUT / 100; i++) {
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100402 status = macb_mdio_read(macb, MII_BMSR);
403 if (status & BMSR_LSTATUS)
404 break;
Haavard Skinnemoenf2134f82007-05-02 13:31:53 +0200405 udelay(100);
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100406 }
407 }
408
409 if (!(status & BMSR_LSTATUS)) {
410 printf("%s: link down (status: 0x%04x)\n",
411 netdev->name, status);
412 return 0;
413 } else {
Haavard Skinnemoenf2134f82007-05-02 13:31:53 +0200414 adv = macb_mdio_read(macb, MII_ADVERTISE);
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100415 lpa = macb_mdio_read(macb, MII_LPA);
416 media = mii_nway_result(lpa & adv);
417 speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF)
418 ? 1 : 0);
419 duplex = (media & ADVERTISE_FULL) ? 1 : 0;
420 printf("%s: link up, %sMbps %s-duplex (lpa: 0x%04x)\n",
421 netdev->name,
422 speed ? "100" : "10",
423 duplex ? "full" : "half",
424 lpa);
425
426 ncfgr = macb_readl(macb, NCFGR);
427 ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
428 if (speed)
429 ncfgr |= MACB_BIT(SPD);
430 if (duplex)
431 ncfgr |= MACB_BIT(FD);
432 macb_writel(macb, NCFGR, ncfgr);
433 return 1;
434 }
435}
436
437static int macb_init(struct eth_device *netdev, bd_t *bd)
438{
439 struct macb_device *macb = to_macb(netdev);
440 unsigned long paddr;
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100441 int i;
442
443 /*
444 * macb_halt should have been called at some point before now,
445 * so we'll assume the controller is idle.
446 */
447
448 /* initialize DMA descriptors */
449 paddr = macb->rx_buffer_dma;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200450 for (i = 0; i < CONFIG_SYS_MACB_RX_RING_SIZE; i++) {
451 if (i == (CONFIG_SYS_MACB_RX_RING_SIZE - 1))
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100452 paddr |= RXADDR_WRAP;
453 macb->rx_ring[i].addr = paddr;
454 macb->rx_ring[i].ctrl = 0;
455 paddr += 128;
456 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200457 for (i = 0; i < CONFIG_SYS_MACB_TX_RING_SIZE; i++) {
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100458 macb->tx_ring[i].addr = 0;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200459 if (i == (CONFIG_SYS_MACB_TX_RING_SIZE - 1))
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100460 macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP;
461 else
462 macb->tx_ring[i].ctrl = TXBUF_USED;
463 }
464 macb->rx_tail = macb->tx_head = macb->tx_tail = 0;
465
466 macb_writel(macb, RBQP, macb->rx_ring_dma);
467 macb_writel(macb, TBQP, macb->tx_ring_dma);
468
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100469 /* choose RMII or MII mode. This depends on the board */
470#ifdef CONFIG_RMII
Reinhard Meyer329f0f52010-11-03 16:32:56 +0100471#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
472 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
473 defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
Bo Shenf7fa2f32012-07-05 17:21:46 +0000474 defined(CONFIG_AT91SAM9XE) || defined(CONFIG_AT91SAM9X5)
Stelian Pop7263ef12008-01-03 21:15:56 +0000475 macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN));
476#else
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100477 macb_writel(macb, USRIO, 0);
Stelian Pop7263ef12008-01-03 21:15:56 +0000478#endif
479#else
Reinhard Meyer329f0f52010-11-03 16:32:56 +0100480#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
481 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
482 defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
Bo Shenf7fa2f32012-07-05 17:21:46 +0000483 defined(CONFIG_AT91SAM9XE) || defined(CONFIG_AT91SAM9X5)
Stelian Pop7263ef12008-01-03 21:15:56 +0000484 macb_writel(macb, USRIO, MACB_BIT(CLKEN));
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100485#else
486 macb_writel(macb, USRIO, MACB_BIT(MII));
487#endif
Stelian Pop7263ef12008-01-03 21:15:56 +0000488#endif /* CONFIG_RMII */
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100489
490 if (!macb_phy_init(macb))
Ben Warren422b1a02008-01-09 18:15:53 -0500491 return -1;
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100492
493 /* Enable TX and RX */
494 macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE));
495
Ben Warren422b1a02008-01-09 18:15:53 -0500496 return 0;
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100497}
498
499static void macb_halt(struct eth_device *netdev)
500{
501 struct macb_device *macb = to_macb(netdev);
502 u32 ncr, tsr;
503
504 /* Halt the controller and wait for any ongoing transmission to end. */
505 ncr = macb_readl(macb, NCR);
506 ncr |= MACB_BIT(THALT);
507 macb_writel(macb, NCR, ncr);
508
509 do {
510 tsr = macb_readl(macb, TSR);
511 } while (tsr & MACB_BIT(TGO));
512
513 /* Disable TX and RX, and clear statistics */
514 macb_writel(macb, NCR, MACB_BIT(CLRSTAT));
515}
516
Ben Warren6bb46792010-06-01 11:55:42 -0700517static int macb_write_hwaddr(struct eth_device *dev)
518{
519 struct macb_device *macb = to_macb(dev);
520 u32 hwaddr_bottom;
521 u16 hwaddr_top;
522
523 /* set hardware address */
andreas.devel@googlemail.com6c169c12011-06-09 02:08:46 +0000524 hwaddr_bottom = dev->enetaddr[0] | dev->enetaddr[1] << 8 |
525 dev->enetaddr[2] << 16 | dev->enetaddr[3] << 24;
Ben Warren6bb46792010-06-01 11:55:42 -0700526 macb_writel(macb, SA1B, hwaddr_bottom);
andreas.devel@googlemail.com6c169c12011-06-09 02:08:46 +0000527 hwaddr_top = dev->enetaddr[4] | dev->enetaddr[5] << 8;
Ben Warren6bb46792010-06-01 11:55:42 -0700528 macb_writel(macb, SA1T, hwaddr_top);
529 return 0;
530}
531
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100532int macb_eth_initialize(int id, void *regs, unsigned int phy_addr)
533{
534 struct macb_device *macb;
535 struct eth_device *netdev;
536 unsigned long macb_hz;
537 u32 ncfgr;
538
539 macb = malloc(sizeof(struct macb_device));
540 if (!macb) {
541 printf("Error: Failed to allocate memory for MACB%d\n", id);
542 return -1;
543 }
544 memset(macb, 0, sizeof(struct macb_device));
545
546 netdev = &macb->netdev;
547
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200548 macb->rx_buffer = dma_alloc_coherent(CONFIG_SYS_MACB_RX_BUFFER_SIZE,
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100549 &macb->rx_buffer_dma);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200550 macb->rx_ring = dma_alloc_coherent(CONFIG_SYS_MACB_RX_RING_SIZE
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100551 * sizeof(struct macb_dma_desc),
552 &macb->rx_ring_dma);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200553 macb->tx_ring = dma_alloc_coherent(CONFIG_SYS_MACB_TX_RING_SIZE
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100554 * sizeof(struct macb_dma_desc),
555 &macb->tx_ring_dma);
556
557 macb->regs = regs;
558 macb->phy_addr = phy_addr;
559
560 sprintf(netdev->name, "macb%d", id);
561 netdev->init = macb_init;
562 netdev->halt = macb_halt;
563 netdev->send = macb_send;
564 netdev->recv = macb_recv;
Ben Warren6bb46792010-06-01 11:55:42 -0700565 netdev->write_hwaddr = macb_write_hwaddr;
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100566
567 /*
568 * Do some basic initialization so that we at least can talk
569 * to the PHY
570 */
571 macb_hz = get_macb_pclk_rate(id);
572 if (macb_hz < 20000000)
573 ncfgr = MACB_BF(CLK, MACB_CLK_DIV8);
574 else if (macb_hz < 40000000)
575 ncfgr = MACB_BF(CLK, MACB_CLK_DIV16);
576 else if (macb_hz < 80000000)
577 ncfgr = MACB_BF(CLK, MACB_CLK_DIV32);
578 else
579 ncfgr = MACB_BF(CLK, MACB_CLK_DIV64);
580
581 macb_writel(macb, NCFGR, ncfgr);
582
583 eth_register(netdev);
584
Jon Loeliger07d38a12007-07-09 17:30:01 -0500585#if defined(CONFIG_CMD_MII)
Semih Hazar0f751d62009-12-17 15:07:15 +0200586 miiphy_register(netdev->name, macb_miiphy_read, macb_miiphy_write);
587#endif
Haavard Skinnemoen5c1fe1f2006-01-20 10:03:34 +0100588 return 0;
589}
590
Jon Loeliger07d38a12007-07-09 17:30:01 -0500591#endif